Birthdate: Oct. 5, 1955
Birth Place: Billings, MT, United States
Residence: Billings, MT
Denny Rehberg was born in Billings, Mont., where he now resides. He earned a bachelor's in public administration from Washington State University in 1977 and began his political career that year as a legislative aide.
Rehberg, a Republican, joined the staff of Montana Rep. Ron Marlenee in 1979. Ten years later, he became director of field offices for newly-elected Montana Sen. Conrad Burns, after managing Burns' successful campaign.
Rehberg was selected by Gov. Stan Stephens to replace Lt. Gov. Allen Kolstad, who had resigned. He was elected lieutenant governor in 1992 when he was the running mate of Marc Racicot.
Rehberg unsuccessfully challenged Montana Sen. Max Baucus in 1996. He won election to the U.S. House in 2000.
Rehberg and wife, Janice, have three children.
Denny Rehberg decided in early 2011 to drop likely re-election to Montana's lone congressional seat in favor of challenging U.S. Sen. Jon Tester.
Rehberg, a Republican, said he wants to move to the U.S. Senate to oppose the policies of President Barack Obama's administration. He has accused Tester of being a yes-man for the president.
He has been involved in Montana politics half his life. His father, Jack, is a former legislator and longtime GOP activist involved in redrawing legislative districts following the 1990 and 2000 census counts.
In 2012, Rehberg backed a House-led effort to exempt border security agencies from some environmental laws. Opponents, including some hunters and environmentalists, have argued it is a federal overreach that is not needed on a northern border where illegal immigration problems are rare.
He said Congress should stop playing politics with student loan debt in May 2012, and accused the Obama administration of creating a controversy where one does not exist.
Rehberg held dozens of town hall meetings in 2010 to hear from voters on health care reform before deciding to oppose the bill signed into law by President Obama in March of that year.
Similarly, he held town halls before announcing his opposition to Tester's forest bill, which would designate new wilderness while mandating a certain amount of acreage be logged.
Rehberg joined other Republican legislators from the West in 2010 in demanding that the Interior Department explain whether it is secretly planning to carve out more than a dozen new national monuments.
Rehberg based his allegations on a leaked memo from the agency that listed 2.5 million acres in Montana as one of 14 sites in nine Western states being considered as national monuments. The Interior Department has said that memo was a product of brainstorming.
Rehberg was a vocal opponent in 2009 of the economic stimulus bill and said that panic in Washington D.C. is leading to bad policy. He says tax breaks should be given to help the economy.
Rehberg's reputation as an attack dog for the Republicans during his years in the state Legislature has helped him in Congress. He is a reliable member of the party and is an aggressive debater.
Rehberg supports a constitutional amendment banning gay marriages.
This is his second run for the U.S. Senate; he lost a close race in 1996 to incumbent Sen. Max Baucus.
Source: Associated Press